/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.hop.core.logging;

import org.apache.hop.core.Const;

import java.util.Collections;
import java.util.LinkedList;
import java.util.List;

public class LogChannelFileWriterBuffer {

  private HopLogLayout layout;

  private String logChannelId;

  private final List<HopLoggingEvent> buffer = Collections.synchronizedList(new LinkedList<>());

  public LogChannelFileWriterBuffer(String logChannelId) {
    this.logChannelId = logChannelId;
    layout = new HopLogLayout(true);
  }

  public void addEvent(HopLoggingEvent event) {
    synchronized (buffer) {
      buffer.add(event);
    }
  }

  public StringBuffer getBuffer() {
    StringBuffer stringBuffer = new StringBuffer(1000);

    synchronized (buffer) {
      for (HopLoggingEvent event : buffer) {
        stringBuffer.append(layout.format(event)).append(Const.CR);
      }

      buffer.clear();
    }

    return stringBuffer;
  }

  public String getLogChannelId() {
    return logChannelId;
  }
}
